18. Rollback Strategies

1name: Rollback
2
3on:
4  workflow_dispatch:
5    inputs:
6      version:
7        description: 'Version to rollback to'
8        required: true
9
10jobs:
11  rollback:
12    runs-on: ubuntu-latest
13    environment: production
14    
15    steps:
16      - name: Rollback to version
17        run: |
18          heroku releases:rollback ${{ github.event.inputs.version }}
19        env:
20          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}

1- name: Deploy
2  id: deploy
3  run: ./deploy.sh
4
5- name: Health check
6  id: health
7  run: |
8    sleep 30
9    curl -sf https://myapp.com/health || exit 1
10
11- name: Rollback on failure
12  if: failure() && steps.deploy.outcome == 'success'
13  run: |
14    echo "Deployment unhealthy, rolling back..."
15    heroku releases:rollback

1- name: Deploy to green
2  run: ./deploy-green.sh
3
4- name: Test green environment
5  run: curl -sf https://green.myapp.com/health
6
7- name: Switch traffic
8  run: ./switch-to-green.sh
9
10- name: Rollback if needed
11  if: failure()
12  run: ./switch-to-blue.sh

1# Rollback last migration
2rails db:rollback
3
4# Rollback specific version
5rails db:migrate:down VERSION=20240101000000